DIAMOND SYSTEMS EPSM-12G2F Epsilon Ethernet Switch Module User Guide
DESCRIPTION
This document is intended as a guide for designing a custom system baseboard for EPSM-12G2F is a compact, rugged Gigabit Ethernet Switch based on the Microsemi VSC7429 24+2 port switch provides both copper and optical interfaces.
The main board provides VSC7429 Switch+ VSC8522 PHY in Com express mini form factor. The main board mounts on a daughterboard. The main board is on top and has heat sink and heat spreader cooling options. The daughter board mounts on the bottom and requires no thermal solution since it has no active components.
Functions
- Microsemi VSC7429-02 Ethernet Switch with a built-in 416MHz MIPS CPU and gigabit PHYs switch with a built-in 12 + 3 QSGMII ports + 2 × 1G/2.5G .
- 12x GbE + 2 SFI sockets on SerDes interface for plugging-in optical SFI modules; Enhanced 10G on 2 ports. SFI sockets are on daughter board.
- Status LEDs on daughter board.
- Two high speed mating connector for daughter board.
Mechanical, Electrical, Environmental
- COM Express mini form factor, 2.165”W x 3.307”H; single board total height ~0.6”; dual board total height ~2.0
- Heatsink / heat spreader options for cooling
- -40°C to +85°C ambient operating temperature without a fan
- 5-36VDC input range.
BLOCK DIAGRAM
Figure 1 provides an overview of the key functional blocks of the EPSM-12G2F switch. It shows the division of features between the main board and daughter board.
EPSM-12G2F System Block Diagram
Figure 1: EPSM-12G2F Block Diagram
MECHANICAL DRAWINGS
Component Placement
The figures below show the locations of key components and I/O connectors.
The main board has a High-speed connector on the bottom side for mating with the optional daughterboard. The
daughterboard contains a mating connector on its top side. The two boards are mated back to back so that the heat
generating components and heat sinks are on Main board top side the outer sides of both boards when mated together.
Figure 2: Top view
Figure 3: Top side dimension
Figure 4: Bottom view
Figure 5: Bottom side dimensions
BOARD IMAGES
Figure 6 Top View
Figure 7 Bottom View
FEATURE DESCRIPTION
Ethernet Switch
Epsilon-12G2F is based on the Microsemi VSC7429 fully integrated 26-port Ethernet switch with 12 Gigabit Ethernet (GE) copper PHYs in a single package. In conjunction with the VSC8522 12-port PHY, 24/26-port switch. The chip contains 1G/2.5G SERDES lanes interface for 2 SFIs. 416MHz MIPS processor 32-bit CPU with DDR2 SDRAM controller.
A single-board model with just the VSC7429 +VSC8522 PHY chip is available for 2 ×1G/2.5G SFI ports+ 12 1G ports+ 3 × QSGMII ports. The VSC8522 PHY may be installed to provide 12 additional ports on the single daughter board. For the 24+2 port version, a daughterboard is installed on the bottom. Power and communication between the two boards is achieved via a pair of high speed board to board connectors.
SFP
Epsilon-12G2F offers support for two SFP sockets. The SFP interface is directly from the VSC7429 switch controller.
Of the two SFP ports one ports supports 1G/2.5G speed and the other port supports only 1G speed.
Figure 8 SFP connector on carrier board
Gigabit Ethernet switch magnetic
Figure 9 GigE Magnetic on carrier board
Power Supply
EPSM-12G2F Powered by a 5VDC of input voltage. 5V/4.3A
Serial interface
The VSC7429 switch offers a serial port function also controlled by the management software using GPIO lines. These lines need to be connected to a transceiver on the carrier board to provide RS-232 connection for alternate connection to the management features of the switch. Only TX and RX signals are required and provided. The serial interface is provided on a J2 connector.
| RS232_RXD | PIN 109 |
| RS232_TXD | PIN 111 |
Figure 10 Serial port transceiver on carrier board
I/O CONNECTORS
Two High-speed B2B connectors (J1, J2)
The Main board contains 2x 120 pin 0.5mm pitch High speed connector, which accommodates the 12x 1Gbps copper ports, 6x QSGMII ports, 2x 10G ports, Power and other side band signals. These connectors mates with the carrier board.
Connector Number: Samtec ERF5-060-05.0-L-DV-K-TR
Mating Connector: Samtec ERM5-060-05.0-L-DV
J1 High-speed B2B connectors
| J1 High-speed B2B connector | |||||
| Description | Net Name | PIN | PIN | Net Name | Description |
| Ground | GND | 1 | 2 | GND | Ground |
| Port 0 Data pair D Connect to RJ45 pin through a magnetics. | RTX0DN | 3 | 4 | RTX0BN | Port 0 Data pair BConnect to RJ45 pin through a magnetics. |
| RTX0DP | 5 | 6 | RTX0BP | ||
| Ground | GND | 7 | 8 | GND | Ground |
| Port 0 Data pair C Connect to RJ45 pin through a magnetics. | RTX0CN | 9 | 10 | RTX0AN | Port 0 Data pair A Connect to RJ45 pin through a magnetics. |
| RTX0CP | 11 | 12 | RTX0AP | ||
| Ground | GND | 13 | 14 | GND | Ground |
| Port 1 Data pair D Connect to RJ45 pin through a magnetics. | RTX1DN | 15 | 16 | RTX1BN | Port 1 Data pair BConnect to RJ45 pin through a magnetics. |
| RTX1DP | 17 | 18 | RTX1BP | ||
| Ground | GND | 19 | 20 | GND | Ground |
| Port 1 Data pair C Connect to RJ45 pin through a magnetics. | RTX1CN | 21 | 22 | RTX1AN | Port 1 Data pair A Connect to RJ45 pin through a magnetics |
| RTX1CP | 23 | 24 | RTX1AP | ||
| Ground | GND | 25 | 26 | GND | Ground |
| Port 2 Data pair D Connect to RJ45 pin through a magnetics. | RTX2DN | 27 | 28 | RTX2BN | Port 2 Data pair BConnect to RJ45 pin through a magnetics. |
| RTX2DP | 29 | 30 | RTX2BP | ||
| Ground | GND | 31 | 32 | GND | Ground |
| Port 2 Data pair C Connect to RJ45 pin through a magnetics. | RTX2CN | 33 | 34 | RTX2AN | Port 2 Data pair A Connect to RJ45 pin through a magnetics |
| RTX2CP | 35 | 36 | RTX2AP | ||
| Ground | GND | 37 | 38 | GND | Ground |
| Port 3 Data pair D Connect to RJ45 pin through a magnetics. | RTX3DN | 39 | 40 | RTX3BN | Port 3 Data pair BConnect to RJ45 pin through a magnetics. |
| RTX3DP | 41 | 42 | RTX3BP | ||
| Ground | GND | 43 | 44 | GND | Ground |
| Port 3 Data pair C Connect to RJ45 pin through a magnetics. | RTX3CN | 45 | 46 | RTX3AN | Port 3 Data pair A Connect to RJ45 pin through a magnetics |
| RTX3CP | 47 | 48 | RTX3AP | ||
| Ground | GND | 49 | 50 | GND | Ground |
| Port 4 Data pair D Connect to RJ45 pin through a magnetics. | RTX4DN | 51 | 52 | RTX4BN | Port 4 Data pair BConnect to RJ45 pin through a magnetics. |
| RTX4DP | 53 | 54 | RTX4BP | ||
| Ground | GND | 55 | 56 | GND | Ground |
| Port 4 Data pair CConnect to RJ45 pin through a magnetics. | RTX4CN | 57 | 58 | RTX4AN | Port 4 Data pair AConnect to RJ45 pin through a magnetics |
| RTX4CP | 59 | 60 | RTX4AP | ||
| Ground | GND | 61 | 62 | GND | Ground |
| Port 5 Data pair DC connect to RJ45 pin through a magnetics. | RTX5DN | 63 | 64 | RTX5BN | Port 5 Data pair B Connect to RJ45 pin through a magnetics. |
| RTX5DP | 65 | 66 | RTX5BP | ||
| Ground | GND | 67 | 68 | GND | Ground |
| Port 5 Data pair C Connect to RJ45 pin through a magnetics. | RTX5CN | 69 | 70 | RTX5AN | Port 5 Data pair A Connect to RJ45 pin through a magnetics |
| RTX5CP | 71 | 72 | RTX5AP | ||
| Ground | GND | 73 | 74 | GND | Ground |
| Port 6 Data pair D Connect to RJ45 pin through a magnetics. | RTX6DN | 75 | 76 | RTX6BN | Port 6 Data pair B Connect to RJ45 pin through a magnetics. |
| RTX6DP | 77 | 78 | RTX6BP | ||
| Ground | GND | 79 | 80 | GND | Ground |
| Port 6 Data pair C Connect to RJ45 pin through a magnetics. | RTX6CN | 81 | 82 | RTX6AN | Port 6 Data pair A Connect to RJ45 pin through a magnetics |
| RTX6CP | 83 | 84 | RTX6AP | ||
| Ground | GND | 85 | 86 | GND | Ground |
| Port 7 Data pair D Connect to RJ45 pin through a magnetics. | RTX7DN | 87 | 88 | RTX7BN | Port 7 Data pair B Connect to RJ45 pin through a magnetics. |
| RTX7DP | 89 | 90 | RTX7BP | ||
| Ground | GND | 91 | 92 | GND | Ground |
| Port 7 Data pair C Connect to RJ45 pin through a magnetics. | RTX7CN | 93 | 94 | RTX7AN | Port 7 Data pair A Connect to RJ45 pin through a magnetics |
| RTX7CP | 95 | 96 | RTX7AP | ||
| PTP0 Input to EPSM. Leave no connect if unused | 1PPS_0 | 97 | 98 | 3V3 | 3.3V/0.6A OUTPUT. Leave no connect if unused |
| Port 8 Data pair D Connect to RJ45 pin through a magnetics. | RTX8DN | 99 | 100 | RTX8BN | Port 8 Data pair B Connect to RJ45 pin through a magnetics. |
| Port 8 Data pair C Connect to RJ45 pin through a magnetics. | RTX8DP | 101 | 102 | RTX8BP | |
| 5V0 | 103 | 104 | 5V0 | Power Input to EPSM | |
| RTX8CN | 105 | 106 | RTX8AN | Port 8 Data pair AC connect to RJ45 pin through a magnetics. | |
| UART_RXD Data input | RTX8CP | 107 | 108 | RTX8AP | Power Input to EPSM |
| RS232_RXD | 109 | 110 | 5V0 | ||
| UART_TXD Data output | RS232_TXD | 111 | 112 | 5V0 | |
| No connect | APPS_1 | 113 | 114 | 5V0 | |
| carrier board select config 1 Input to EPSM | DB CONFIG 1 | 115 | 116 | 5V0 | |
| carrier board select config 2 Input to EPSM | DBCONFIG2 | 117 | 118 | 5V0 | |
| Global device reset, active low Input to EPSM | /MR_RST | 119 | 120 | 5V0 | |
J2 High-speed B2B connectors
| Description | Net Name | PIN | PIN | Net Name | Description |
| Ground | GND | 1 | 2 | GND | Ground |
| SFP Di ffereni al data inputs. 1G | SFPPLUSA_RXD_N | 3 | 4 | SFPPLUSB_FOCD_N | SFP Differential data inputs. 2.5G/1G |
| SFPPLUSA RXD_P | 5 | 6 | SFPPLUSB_RXD_P | ||
| Ground | GND | 7 | 8 | GPM | Ground |
| SFP Differential data outputs.10 | SFPPLUSPLTXD_N | 9 | 10 | SFPPLUSB_TXD_N | SFP Differential data outputs 2.5Gi1G |
| SFPPLUSA TXD_P | 11 | 12 | SFPPLUSB_TXD_P | ||
| Ground | GND | 13 | 14 | GND | Ground |
| • | 15 | 18 | OSGMII_P21_P24_FtXD_P | Differentia data inputs.O.SGM1102.5G/1G |
|
| 17 | 18 | CISGIAII_P21_P24_FOD_N | |||
| Ground | 910 | 19 | 20 | GND | Ground |
| 21 | 22 | OSGMII_P21_P24 TXD_P | Differenial data ouhuts.0SGM110/2.5G/1G |
||
| 23 | 24 | OSGMII_P21_P24 TXD_N | |||
| Ground | GND | 25 | 26 | GND | Ground |
| Referent one input to VSC7429. Leave unconnected if not used |
CLK125_1 | 27 | 28 | OSGMILP17_P2O_RXD_P | Differential data Inputs.OSCM1102.5G/1G |
| Ground | GND | 29 | 30 | 0SGMII_P17_P20_FOCD_N | |
| 31 | 32 | GND | Ground | ||
| Ground | (3413 | 33 | 34 | OSGMII_P17_P20 TXD_P | Wormed data oulputs.CISGM110/2.56/16 |
| 35 | 38 | OSGMII_P17_P20 TXD_N | |||
| Ground | GND | 37 | 38 | 910 | Ground |
| SFP PLUS A and Input to VSC7429 | SFPPLUSA_SCL | 39 | 40 | OSGMILP13_P16_RXD_P | Differential data Iputs.OSGM1102.5G/1G |
| SFP PLUS A loss nut to VSC7429 | SFPPLUSA_LOS | 41 | 42 | OSGMII_P13_P16_RXD_N | |
| SFP PLUS 8 select input to VSC7429 | SFPFLUSB_SCL | 43 | 44 | CND | |
| SFP PLUS B loss Input to VSC7429 | SFPPLUSA_LOS | 45 | 46 | OSGMII_P 13_P 16 TXD_P | Differemlial dma oulputs.OSGM110/2.5G/1G |
| 47 | 48 | OSGMII_P13_P16 TXD_N | |||
| MIIM data input Output Jed VSC7429 | MI12M010 | 49 | 50 | GND | Ground |
| MOM clock for VSC7429 | MI12_MDC | 51 | 52 | ||
| IFt00 IN | NINT_FHY0 | 53 | 54 | ||
| VSC7429 I2C Clock | 12C_SCL | 55 | 56 | ||
| VSC7429 I2C Data | I2C_SDA | 57 | 58 | ||
| 12C_MUXSEL_GP101 | GPO1 | 59 | 60 | SGP102_10 | SIO load data output |
| GP102 | GP102 | 61 | €2 | SGP102 CI. K | SIO clock output |
| SIO data output | SGP102_1:10 | 63 | 64 | ||
| SIO data int | SGP102_1:11 | 65 | 68 | ||
| gni:brain VSC8512 | COMA_MODE | 67 | 68 | ||
| ESLED1_Pube Tan VSC8512 | LED_PWM | 69 | 70 | ||
| Patti Data pair C&D Gamed to RJ45 dn trough a magnetics.Leave unconnected |
RTX9DN | 71 | 72 | GND | Ground |
| RTX9DP | 73 | 74 | |||
| RTX9CN | 75 | 76 | RTX98N | Pon 9 Data par A& B Connect to RJ4 5 pin through a magnetics.Leave unconnected |
|
| RTX9CP | 77 | 78 | RTX9BP | ||
| IRO1 IN | NINT_PHY1 | 79 | 80 | RTX9AN | |
| Device reset, active low nut to EPSM. Leave no comect if not used |
NSYSRESET | 81 | 82 | RTX9AP | |
| Ground | GND | 83 | 84 | GND | Ground |
| Pat 9 Data pair D | RTX9D 2X N | 85 | 88 | RTX98 2X N | Port 9 Data par B |
| Connect to RJ45 pin through amagnetics. | RTX9D_2X_P | 87 | 88 | RTX9B_2X_P | Connect to RJ45 pin through amagnetics. |
| Ground | GND | 89 | 90 | GND | Ground |
| Port 9 Data pair C Connect to RJ45 pin through amagnetics. | RTX9C_2X_N | 91 | 92 | RTX9A_2X_N | Port 9 Data pair A Connect to RJ45 pin through amagnetics. |
| RTX9C_2X_P | 93 | 94 | RTX9A_2X_P | ||
| Ground | GND | 95 | 96 | GND | Ground |
| Port 10 Data pair D Connect to RJ45 pin through amagnetics. | RTX10DN | 97 | 98 | RTX10BN | Port 10 Data pair B Connect to RJ45 pin through amagnetics. |
| RTX10DP | 99 | 100 | RTX10BP | ||
| Ground | GND | 101 | 102 | GND | Ground |
| Port 10 Data pair C Connect to RJ45 pin through amagnetics. | RTX10CN | 103 | 104 | RTX10AN | Port 10 Data pair A Connect to RJ45 pin through amagnetics. |
| RTX10CP | 105 | 106 | RTX10AP | ||
| Ground | GND | 107 | 108 | GND | |
| Port 11 Data pair D Connect to RJ45 pin through amagnetics. | RTX11DN | 109 | 110 | RTX11BN | Port 11 Data pair B Connect to RJ45 pin through amagnetics. |
| RTX11DP | 111 | 112 | RTX11BP | ||
| Ground | GND | 113 | 114 | GND | Ground |
| Port 11 Data pair C Connect to RJ45 pin through amagnetics. | RTX11CN | 115 | 116 | RTX11AN | Port 11 Data pair A Connect to RJ45 pin through amagnetics. |
| RTX11CP | 117 | 118 | RTX11AP | ||
| Ground | GND | 119 | 120 | GND | Ground |
LED LOGIC
This below section shows the implementation of LED logic on the carrier board. This logic can be implemented inside a CPLD
Ethernet port 1-12 LEDs
SFP port 1&2 LEDs
Board Status LEDs
SFP LOGIC
HEAT SINK ACCESSORY
The EPSM-12G2F card comes standard with an aluminum heat sink in the same shape as the board and mounts to the top of the board via the four corner COM express mini board mounting holes. The heat sink contains built in riser blocks that bring the metal close to the surface of all the heat generating components. Thermal pads fill in the gap between the metal and the component top surfaces.
EPSM-12G2F Module with Heat sink attached
Mechanical Dimension of the Heatsink
Copyright 2021
Diamond Systems Corporation
www.diamondsystems.com
Documents / Resources
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DIAMOND SYSTEMS EPSM-12G2F Epsilon Ethernet Switch Module [pdf] User Guide EPSM-12G2F Epsilon Ethernet Switch Module, EPSM-12G2F, Epsilon Ethernet Switch Module, Ethernet Switch Module, Switch Module, Module |
